Method of fabricating a thermostructural composite material part, and a part obtained thereby
    44.
    发明授权
    Method of fabricating a thermostructural composite material part, and a part obtained thereby 有权
    热结构复合材料部件的制造方法以及由此获得的部件

    公开(公告)号:US08221836B2

    公开(公告)日:2012-07-17

    申请号:US12501648

    申请日:2009-07-13

    Abstract: The method comprises: using chemical vapor infiltration to form a first continuous interphase on the fibers of a fiber structure made of refractory fibers, the interphase having a thickness of no more than 100 nanometers; impregnating the fiber structure with a consolidation composition comprising a carbon or ceramic precursor resin; forming a fiber preform that is consolidated by shaping the impregnated fiber structure and using pyrolysis to transform the resin into a discontinuous solid residue of carbon or ceramic; using chemical vapor infiltration to form a second continuous interphase layer; and densifying the preform with a refractory matrix. This preserves the capacity of the fiber structure to deform so as to enable a fiber preform to be obtained that is of complex shape, while nevertheless guaranteeing the presence of a continuous interphase between the fibers and the matrix.

    Abstract translation: 该方法包括:使用化学气相渗透在由耐火纤维制成的纤维结构的纤维上形成第一连续相间,相间的厚度不超过100纳米; 用包含碳或陶瓷前体树脂的固化组合物浸渍纤维结构; 形成纤维预成型件,其通过成形浸渍的纤维结构并使用热解将树脂转变成碳或陶瓷的不连续的固体残余物来固结; 使用化学气相渗透形成第二连续相间层; 并用耐火基体致密化预制件。 这保持了纤维结构变形的能力,以便能够获得具有复杂形状的纤维预制件,同时保证在纤维和基质之间存在连续的相间。

    COMPOSITE MATERIAL PART HAVING A CERAMIC MATRIX, AND METHOD FOR MANUFACTURING SAME
    45.
    发明申请
    COMPOSITE MATERIAL PART HAVING A CERAMIC MATRIX, AND METHOD FOR MANUFACTURING SAME 审中-公开
    具有陶瓷矩阵的复合材料部件及其制造方法

    公开(公告)号:US20120164430A1

    公开(公告)日:2012-06-28

    申请号:US13393978

    申请日:2010-07-21

    Abstract: In a composite material part having a ceramic matrix and including a fibrous reinforcement which is densified by a matrix consisting of a plurality of ceramic layers having a crack-diverting matrix interphase positioned between two adjacent ceramic matrix layers, the interphase includes a first phase made of a material capable of promoting the diversion of a crack reaching the interphase according to a first propagation mode in the transverse direction through one of the two ceramic matrix layers adjacent to the interphase, such that the propagation of the crack continues according to a second propagation mode along the interphase, and a second phase consisting of discrete contact pads that are distributed within the interphase and capable of promoting the diversion of the crack that propagates along the interphase according to the second propagation mode, such that the propagation of the crack is diverted and continues according to the first propagation mode through the other ceramic matrix layer that is adjacent to the interphase.

    Abstract translation: 在具有陶瓷基体并且包括纤维增强物的复合材料部件中,所述纤维增强体由由位于两个相邻的陶瓷基体层之间的具有裂纹转向矩阵相的多个陶瓷层组成的基体致密化,所述界面包括由 能够通过与相间相邻的两个陶瓷基体层中的一个,沿横向促进根据第一传播模式到达界面的裂纹的转移的材料,使得裂纹的传播根据第二传播模式继续 以及第二相,其包括分布在界面内的离散接触垫,并且能够促进根据第二传播模式沿着相间传播的裂纹的转移,使得裂纹的传播被转移,并且 根据第一传播模式通过另一陶瓷继续 与相间相邻的基质层。

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